View performance data

Tivoli Performance Viewer presents performance data in two formats: a summary report and a chart.

The summary reports display a summary of all performance data for an application server. The charts display real-time performance data for specific resources.

These topics describe how to display performance data in Tivoli Performance Viewer:

• View summary reports for an application server
• View chart data for resources
• Performance data refresh behavior

View summary reports for an application server

Before you view the summary report, verify that data counters are enabled and monitoring levels are set properly.

The standard monitoring level enables all reports except the report on enterprise bean methods. To enable enterprise bean method reports, use the custom monitoring setting and set the monitoring level to Max for the enterprise bean module.

To view the summary reports, follow these steps:

1. In the navigation tree, click the icon for your application server.
2. Select the tab for the summary report that you want to view.
3. To sort the data based on a data counter, click the column header for the counter.

View data for resources

The View Data tab displays a performance data in a report format. To view data in this format, follow these steps:

1. Click a resource in the resource selection panel.
2. Click the View Data tab in the data monitoring panel.

The View Chart tab displays a graph with time as the x-axis and the performance value as the y-axis. To view data in this format, follow these steps:

1. Click a resource in the resource selection panel.
2. Click the View Chart tab in the data monitoring panel.

Negative results display as zero (0). If necessary, you can type a scaling factor in the Scale field for each counter.

Performance data refresh behavior

New performance data becomes available in these situations:

• You change the monitoring level for a resource.
• You add a new resource or application to the run time.

Tivoli Performance Viewer handles these changes in the following ways:

• If Tivoli Performance Viewer is monitoring the new or changed resource, or the parent of the resource, the system is automatically refreshed.
• If you add counters for a group that the performance viewer is monitoring, the performance viewer automatically adds the counters to the table and chart views.
• If Tivoli Performance Viewer is monitoring the parent of a new resource, the new resource is detected automatically and added to the Resource Selection tree.

To manually refresh the Resource Selection tree, or parts of it, select the appropriate node and click the Refresh icon, or right-click a resource and select Refresh.

When an application server runs, the performance viewer tree automatically updates the server local structure, including its containers and enterprise beans, to reflect changes on the server. However, if a stopped server starts after the performance viewer starts, a manual refresh operation is required so that the server structure accurately reflects in the Resource Selection tree.

For more information on configuring and using Tivoli Performance Viewer, see these help topics:

• Changing the refresh rate of data retrieval
• Changing the display buffer size
• Viewing and modifying performance chart data
• Scaling the performance data chart display
• Clearing values from tables and charts
• Resetting the counters to zero
• Replaying a performance data log file